The twin engine aircraft departed runway 14R at Moscow-Domodedovo Airport at 1421LT. Six minutes later, while climbing to an altitude of 6,000 feet in light snow showers, the airplane descended then disintegrated in a snow covered field located in Argunovo, about 37 km southeast of the Airport, one minute later. The aircraft was totally destroyed and debris were scattered on more than one km. All 71 occupants were killed. Both recording systems have been recovered. A day after the crash, Russian Authorities confirmed that the aircraft was intact until the final impact with the ground. Preliminary reports indicates speed variations on all three ASI's three minutes after rotation. 50 seconds after the automatic pilot was disconnected, the airplane experienced vertical loads between 0,5 and 1,5 G. then pitched down to an angle of 35°. Five seconds prior to impact, the airplane banked right to 25°. Preliminary investigations shows that the incorrect data on ASI's was caused by icing of the Pitot tubes as the heating systems was off, apparently because the crew failed to activate it.